"When we launched the Vita with Uncharted, it was amazing; PS3-like quality in your palm, but as time moved on, you are seeing PS4 quality and people's expectations for the graphic fidelity has gone up," he continued.

"It's very fortunate that the indie boom happened and they are providing lots of great content to Vita.

"Gameplay, game mechanic-wise, people want to spend 10 minutes, 15 minutes getting in and out. On Vita, it's great with suspended functionality, so these indie games really are great for that from a game design standpoint.